gistfile1.txt

#!/usr/bin/perl

=encoding UTF-8
=cut

=head1 DESCRIPTION

=cut

# common modules
use strict;
use warnings FATAL => 'all';
use feature 'say';
use utf8;
use open qw(:std :utf8);

use DDP;
use Carp;
use JSON::MergePatch;
use File::Slurp;
use JSON::PP;

# global vars

# subs

# main
sub main {

    my $one = read_file('one.json');
    my $two = read_file('two.json');

    my $diff = json_merge_diff($one, $two);

    my $json_coder = JSON::PP
        ->new
        ->pretty
        ->canonical
        ->indent_length(4)
        ;

    my $pretty_json = $json_coder->encode($diff);
    say $pretty_json;

}
main();
__END__